A serial of protonated and layered transition metal oxides, including layered HTa WO6, HNbMoO6 as well as HNb WO6, were synthesized by solid-state reaction and
Boron-doped Ketjenblack is attempted as cathode catalyst for non-aqueous rechargeable Li–O_2 batteries. The boron-doped Ketjenblack delivers an extremely high